TY - JOUR
T1 - Energy localisation and frequency analysis in the locust ear
AU - Malkin, Rob
AU - Mcdonagh, Thomas R N
AU - Mhatre, Natasha
AU - Scott, Thomas Bligh
AU - Robert, Daniel
PY - 2013/11/6
Y1 - 2013/11/6
N2 - Animal ears are exquisitely adapted to capture sound energy and perform signal analysis. Studying the ear of the locust, we show how frequency signal analysis can be performed solely by using the structural features of the tympanum. Incident sound waves generate mechanical vibrational waves that travel across the tympanum. These waves shoal in a tsunami like fashion, resulting in energy localisation that focuses vibrations onto the mechanosensory neurons in a frequency dependent manner. Using finite element analysis, we demonstrate that two mechanical properties of the locust tympanum, distributed thickness and tension, are necessary and sufficient to generate frequency-dependent energy localisation.
AB - Animal ears are exquisitely adapted to capture sound energy and perform signal analysis. Studying the ear of the locust, we show how frequency signal analysis can be performed solely by using the structural features of the tympanum. Incident sound waves generate mechanical vibrational waves that travel across the tympanum. These waves shoal in a tsunami like fashion, resulting in energy localisation that focuses vibrations onto the mechanosensory neurons in a frequency dependent manner. Using finite element analysis, we demonstrate that two mechanical properties of the locust tympanum, distributed thickness and tension, are necessary and sufficient to generate frequency-dependent energy localisation.
U2 - 10.1098/rsif.2013.0857
DO - 10.1098/rsif.2013.0857
M3 - Article (Academic Journal)
SN - 1742-5662
VL - 11
JO - Journal of the Royal Society Interface
JF - Journal of the Royal Society Interface
ER -